I Garcia-Doval1,2, J R Ingram3, L Naldi4, A Anstey5. 1. Complexo Hospitalario Universitario de Vigo, Vigo. Meixoeiro s.n. 36200, Vigo, Spain. ignacio.garcia.doval@sergas.es. 2. Research Unit, Fundación Piel Sana AEDV, Madrid, Spain. ignacio.garcia.doval@sergas.es. 3. Department of Dermatology & Wound Healing, Division of Infection and Immunity, Cardiff University, University Hospital of Wales, 3rd Floor Glamorgan House, Heath Park, Cardiff, CF14 4XN, U.K. 4. Centro Studi GISED, Via Garibaldi 13/15, Azienda Ospedaliera papa Giovanni XXIII, 24100, Bergamo, Italy. 5. Betsi Cadwaladr University Health Board, Ysbyty Gwynedd, Penrhosgarnedd, Bangor, Gwynedd, LL57 2PY, U.K.